Sharing the discovery on Facebook, they wrote: "We couldn't resist heading over to Holywell Bay this afternoon for a cheeky bit of celeb spotting when we heard the cast of BBC's amazing Poldark were on location filming the next series.

"We think we're even more in love than we already were."

After an explosive series three, the fourth installment of the BBC hit is due to start in 2018.

Series three of Poldark ended on something of an emotional cliffhanger as Eleanor Tomlinson’s Demelza cheated on the titular character.